<div id="crearIcs" style="background-color: red;opacity:0.4;filter:alpha(opacity=40);padding:1em;" >
    <h2>Obre el teu fitxer ICAL</h2>
    <br>
    <form method="post" id="sube" action="http://localhost/projecte-sintesi-dani-victor/site_media/php/upload.php" enctype="multipart/form-data" onsubmit="return isICS(document.getElementById('uploadedfile').value)" >
        <input type="file" name="uploadedfile" id="uploadedfile" >
        <input type="submit"    value="Puja el teu fitxer" >
    </form>
     <div id="sota" style="position: absolute;top:80%;left: 90%;">
        <button onclick="cerrarDIV('crearIcs'); cerrarDIV('Cranc');" id="cerrar"></button>
    </div>   
</div>